A tank farm system that includes a tank configured to hold a volume of fluid; a barrier constructed at least partially around the tank; and a portable pathway disposed on the barrier. The portable pathway further includes a pliable frame member; a row of mating holes disposed on each side of the pliable frame member; a set of steps coupled to the pliable frame member; wherein one or more of the set of steps is coupled to the pliable frame member with a mount that aligns with the row of mating holes on each of the corresponding sides of the pliable frame member.

A tank farm system that includes a tank configured to hold a volume of fluid; a barrier constructed at least partially around the tank; and a portable pathway disposed on the barrier. The portable pathway further includes a pliable frame member; a row of mating holes disposed on each side of the pliable frame member; a set of steps coupled to the pliable frame member; wherein one or more of the set of steps is coupled to the pliable frame member with a mount that aligns with the row of mating holes on each of the corresponding sides of the pliable frame member.

An adjustable staircase includes an upper stair, a lower stair, a first bar and a second bar. The vertical distance between the upper stair and the lower stair is adjustable. Also, each bar is coupled to each of the upper and lower stairs, and the first bar is configured to function as a guard. As a result, the first bar blocks a pinch point between the first and second bars.

An adjustable staircase includes an upper stair, a lower stair, a first bar and a second bar. The vertical distance between the upper stair and the lower stair is adjustable. Also, each bar is coupled to each of the upper and lower stairs, and the first bar is configured to function as a guard. As a result, the first bar blocks a pinch point between the first and second bars.

A platform system comprising a platform structure having at least one modular platform unit with platform connection features on a side surface thereof to which other components can be connected, the other components including at least two of the following: another modular platform unit, a stair unit, a tower unit, a handrail unit, and a ladder unit. A stair assembly is connected to the platform structure via said connection features, the stair assembly comprising a plurality of stair units connected together to provide a number of steps equal to the sum of steps of the stair units.

A platform system comprising a platform structure having at least one modular platform unit with platform connection features on a side surface thereof to which other components can be connected, the other components including at least two of the following: another modular platform unit, a stair unit, a tower unit, a handrail unit, and a ladder unit. A stair assembly is connected to the platform structure via said connection features, the stair assembly comprising a plurality of stair units connected together to provide a number of steps equal to the sum of steps of the stair units.

A prefabricated staircase assembly of different modules for assembling on a construction site of a building between upper and lower floors, and method of assembling thereof. The modular staircase assembly includes staircase modules with stringers and treads mounted on and supported by posts extending between the floors. A stairwell frame or module attaches to a stairwell extending through the upper floor and connects to the posts. A railing assembly or module mounts on the stairwell frame before being replaced by the walls of the stairwell. All parts of modules of the staircase assembly are fabricated and adjusted in factory before shipment and installation on site.

A prefabricated staircase assembly of different modules for assembling on a construction site of a building between upper and lower floors, and method of assembling thereof. The modular staircase assembly includes staircase modules with stringers and treads mounted on and supported by posts extending between the floors. A stairwell frame or module attaches to a stairwell extending through the upper floor and connects to the posts. A railing assembly or module mounts on the stairwell frame before being replaced by the walls of the stairwell. All parts of modules of the staircase assembly are fabricated and adjusted in factory before shipment and installation on site.